FileSystem: Move SnapshotFileCallback into FileSystemCallbacks.h

Source/modules/filesystem/FileSystemCallbacks.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "modules/filesystem/FileSystemCallbacks.h"
 
 #include "core/dom/ExecutionContext.h"
+#include "core/fileapi/File.h"
 #include "core/fileapi/FileError.h"
 #include "core/html/VoidCallback.h"
 #include "modules/filesystem/DOMFilePath.h"
 #include "modules/filesystem/DOMFileSystem.h"
 #include "modules/filesystem/DOMFileSystemBase.h"
 #include "modules/filesystem/DirectoryEntry.h"
 #include "modules/filesystem/DirectoryReader.h"
 #include "modules/filesystem/Entry.h"
 #include "modules/filesystem/EntryCallback.h"
 #include "modules/filesystem/ErrorCallback.h"
+#include "modules/filesystem/FileCallback.h"
 #include "modules/filesystem/FileEntry.h"
 #include "modules/filesystem/FileSystemCallback.h"
 #include "modules/filesystem/FileWriterBase.h"
 #include "modules/filesystem/FileWriterBaseCallback.h"
 #include "modules/filesystem/Metadata.h"
 #include "modules/filesystem/MetadataCallback.h"
 #include "platform/FileMetadata.h"
 #include "public/platform/WebFileWriter.h"
 
 namespace WebCore {
@@ skipping 178 matching lines @@
     , m_successCallback(successCallback)
 {
 }
 
 void MetadataCallbacks::didReadMetadata(const FileMetadata& metadata)
 {
     if (m_successCallback)
         handleEventOrScheduleCallback(m_successCallback.release(), Metadata::create(metadata));
 }
 
-// FileWriterBaseCallbacks ----------------------------------------------------------
+// FileWriterBaseCallbacks ----------------------------------------------------
 
 PassOwnPtr<AsyncFileSystemCallbacks> FileWriterBaseCallbacks::create(PassRefPtrWillBeRawPtr<FileWriterBase> fileWriter, PassOwnPtr<FileWriterBaseCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context)
 {
     return adoptPtr(new FileWriterBaseCallbacks(fileWriter, successCallback, errorCallback, context));
 }
 
 FileWriterBaseCallbacks::FileWriterBaseCallbacks(PassRefPtrWillBeRawPtr<FileWriterBase> fileWriter, PassOwnPtr<FileWriterBaseCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context)
     : FileSystemCallbacksBase(errorCallback, nullptr, context)
     , m_fileWriter(fileWriter.get())
     , m_successCallback(successCallback)
 {
 }
 
 void FileWriterBaseCallbacks::didCreateFileWriter(PassOwnPtr<blink::WebFileWriter> fileWriter, long long length)
 {
     m_fileWriter->initialize(fileWriter, length);
     if (m_successCallback)
         handleEventOrScheduleCallback(m_successCallback.release(), m_fileWriter.release());
 }
 
+// SnapshotFileCallback -------------------------------------------------------
+
+PassOwnPtr<AsyncFileSystemCallbacks> SnapshotFileCallback::create(DOMFileSystemBase* filesystem, const String& name, const KURL& url, PassOwnPtr<FileCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context)
+{
+    return adoptPtr(new SnapshotFileCallback(filesystem, name, url, successCallback, errorCallback, context));
+}
+
+SnapshotFileCallback::SnapshotFileCallback(DOMFileSystemBase* filesystem, const String& name, const KURL& url, PassOwnPtr<FileCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context)
+    : FileSystemCallbacksBase(errorCallback, filesystem, context)
+    , m_name(name)
+    , m_url(url)
+    , m_successCallback(successCallback)
+{
+}
+
+void SnapshotFileCallback::didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot)
+{
+    if (!m_successCallback)
+        return;
+
+    // We can't directly use the snapshot blob data handle because the content type on it hasn't been set.
+    // The |snapshot| param is here to provide a a chain of custody thru thread bridging that is held onto until
+    // *after* we've coined a File with a new handle that has the correct type set on it. This allows the
+    // blob storage system to track when a temp file can and can't be safely deleted.
+
+    // For regular filesystem types (temporary or persistent), we should not cache file metadata as it could change File semantics.
+    // For other filesystem types (which could be platform-specific ones), there's a chance that the files are on remote filesystem. If the port has returned metadata just pass it to File constructor (so we may cache the metadata).
+    // FIXME: We should use the snapshot metadata for all files.
+    // https://www.w3.org/Bugs/Public/show_bug.cgi?id=17746
+    if (m_fileSystem->type() == FileSystemTypeTemporary || m_fileSystem->type() == FileSystemTypePersistent) {
+        handleEventOrScheduleCallback(m_successCallback.release(), File::createWithName(metadata.platformPath, m_name));
+    } else if (!metadata.platformPath.isEmpty()) {
+        // If the platformPath in the returned metadata is given, we create a File object for the path.
+        handleEventOrScheduleCallback(m_successCallback.release(), File::createForFileSystemFile(m_name, metadata));
+    } else {
+        // Otherwise create a File from the FileSystem URL.
+        handleEventOrScheduleCallback(m_successCallback.release(), File::createForFileSystemFile(m_url, metadata));
+    }
+}
+
 // VoidCallbacks --------------------------------------------------------------
 
 PassOwnPtr<AsyncFileSystemCallbacks> VoidCallbacks::create(PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context, DOMFileSystemBase* fileSystem)
 {
     return adoptPtr(new VoidCallbacks(successCallback, errorCallback, context, fileSystem));
 }
 
 VoidCallbacks::VoidCallbacks(PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<ErrorCallback> errorCallback, ExecutionContext* context, DOMFileSystemBase* fileSystem)
     : FileSystemCallbacksBase(errorCallback, fileSystem, context)
     , m_successCallback(successCallback)
 {
 }
 
 void VoidCallbacks::didSucceed()
 {
     if (m_successCallback)
         handleEventOrScheduleCallback(m_successCallback.release());
 }
 
 } // namespace